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Aug. 25, 1931. w. M. PIGGOTT HEAT DISTRIBUTOR Filed March 5, 1930 WITNESS:

"1-5 inner receptacle and'said means Patented Aug. 25, 1931 1 MQPIGGOT'T-JOF LEAVENWORTIL-KANSAS HEAT xnisreinuzros 7 Application filed Mar ch' 3,

" This invention relates {to new-"and useful f improvements in heat distributors and has for its primary object the'provision o'fa de- Vice of the above stated character especially oughly and-evenly heat air, fluids, food stuffs and any-other materials by 'vaporor steam from water,"mercury, oil and'any other fluid.

Another object of this invention is the pro- 10vision of inner and'outenreceptacle's providmg betweenthesame a sealed chamber having means to permit the placing of desired "kinds of heating fluids therein to cast off vapor, or steamto evenly heat all walls ofthe adapted to automatically permit the escape of the steam 'or vapor at a predetermined temperature or pressure. I

A further object of'this invention is the '20 provision of a heat distributor of the above stated character, which will be simple, durable and efiicient, and which may be manu factured and sold'at a comparatively low cost.. T

With these and other objects in view as will become more apparent as the description proceeds, the invention consists in certain novel features of construction, combination and arrangement of parts as will be hereinafter more fully described and claimed. For a complete understanding of my invention, reference is to be had to the follow- 'ing descriptionand accompanying drawings, in which:

Figure 1 is a vertical sectional view illustrating a heat distributor constructed in accordance with my invention.

Figure2 is a transverse sectional view illustratingthe same. 7

Figure 3 is a fragmentary side elevation illustrating the steam or vapor control.

Figure 4 is a sectional view taken on the line 44 of Figure 3. I I

Figure 5 is a vertical sectional view illustrating the application of my invention to a cooking utensil or the like.

Referring in detail to the drawings, the numeral 1 indicates an outer receptaclefin which is positioned an inner receptacle 2 spaced from the outer receptacle to form a heating chamber 3. T '2 secured together and the rec opening 4 t "It isto'be understoodth associated with a suit ly is illustrated ac'tin 1930. -Seria1'i To. 432,357.

he -receptacles hand in any well known ay be formed integrally to form 3 in'to'an air tiglit compartment c epta'cle 1 is [provided with an 0 permit a fluid such as water, oil, etc.', to be placed in the chemit ist-o be understood that th'e' fluid is placed therein, in the desired amount to cast off steam or vapor when heated, to "permitthe steam or vapor to thoroughly and evenly heat the walls of the inner-receptacle. at the receptacle 1 is I able 'heating source, hich may-be separate from the as a part thereof. A disk 5'is receptacle 1 as at 6"and norand closes the opening 4 land has frictional contact with the wall of the, receptacle 1 to prevent accidental displace ment of the disk during the use ofthedevice. The disk '5 forms a closure for the opening {1 and also acts as a thermostat and may he constructed from any material suitable for the purpose which is susceptible to ex ansion and contraction, from heat. "The ther- 'mos'tatic disk is ad'apter'l to permit the steam pe from the chamber when orvapor to esca 7 it reaches a predetermined pressure or when in reaches a predeterm ned manner or m the chamber mercury,

(not shown) w receptacle 1 or pivoted to the mally overlies the fluid there temperature.

In Figure act the drawings, the diskclearg as a thermostat and es the latter "expanded to permit the escape of the chamber 3 by way showing in dotted lin or flexed due to heat steam or vapor from of the opening "4.

The inner receptacle Ema y be provided with a plurality of tubes '7 to pcrmitthe iree circulation of vapor or steam tofahd about the walls'of the same and the inner receptacle has a passage "8 "therethrough and connected with tubular portions 9 secured tot-here ceptacle 1 or maybe formed integrally therewith if desired. Air, gas or any fliiid for ma terial may be passed throughthe passage for chamber 8 by wayof the'tu'bular portions!) toithoroughly heat the same by contacting with the'walls of the chamber 8 and to retard as or fluid through the inner receptacle,

. internal combustion engines,

afan 10 may be provided and is journaled in suitable supports 11. The device as shown in Figure 1 may be used for many purposes, as for instance may be. employed for heating air, gas, or fuel for and if desired any other'materials to be heated may be 'passedthrough this deviceby any suitable means.

Referring to Figure 5 of the drawings, inner and'outer receptacles 12 and 13 are connected together at their upper edges to form the air-tight chamber 13 and the outer receptacle 13 has an opening 15 closed by a disk 16 similar to the disk 5 in'the form of invention shown in Figure 1. The inner receptacle 12 has, its side and bottom walls spaced from thewalls of the outer receptacle to permitsteam or vapor to freely circulate within the chamber 14 and about the walls of the inner receptacle. The inner and outer receptacles may be constructed from any material suitable for the purpose and have their upper --the spirit and scope of edges curved to struction',

form a retaining flange 17 to receive a suitable cover (not shown) whereby food stuffs and other material may be heated within the inner receptacle.

While I have shown and described the preferred embodiment of my invention, it

will be understood that minor changes inconcombination and arrangement of parts may be made without departing from the invention as claimed.

Having thus described the invention, what I I claim 1s:

tacles, means for admitting temperature or pressure,

ber between the same,

and overlying the opening to permit steam or vapor to escape therefrom at a predetermined pressure or temperature andprovide means to allow the fluid to be placed be tween the receptacles. v

4. A heat distributor comprising inner and outer receptacles having an air-tight chamber between the same, said chamber extending also between the end'walls of said recepfluid to said chamber and to permit the escape of steam or vapor from said chamber at a predetermined tubes extending through the inner receptacle, said inner receptacle having a passage therethrough.

5. A heat distributor comprising inner-and outer receptacles having. an: air-tight chamsaid chamber extending also betweenithe end walls of said receptacles, means for admitting fluid to said chamber and to permitthe escapeof steam or vapor therefrom at a predetermined tem perature or pressure, the said. inner receptacle having a plurality of passages, some of said passages having communication with the interior of the outer receptacle and one of the passages having communication with the exterior of the outer receptacle to form a passage to permit gasor fluid to pass through said receptacles, and a retarding means in said last named passage. I In testimony whereof I afliX my signature.

WARREN M. rreeorr.

1. A heat distributor comprising a heated receptacle, a second receptacle within and associated with the first receptacle and adapt. ed to have fluid between said receptacles to cast off vapor or steam to evenly heat the walls of the second receptacle, a thermo- 7 static diskto permit the steam or vapor to escape at a predetermined pressure or temperareceptacle, a

,edto have fluid between ,ture' and-provide means to allow the fluid to' be placed between the receptacles. v

- 2. A heat distributor comprising a heated associated with the first receptacle and adaptsaid receptacles to cast off vapor or steam walls of the second receptacle, a'thermostatic diskapivotally mounted on the outer receptacle to permit steam or vapor to escape at a predetermlnedpressure or temperature and provide means to allow the fluid to be placed between the receptacles.

Q 3. A heat distributor comprising .a. heated receptacle having an opening, a second re ceptacle within and associated with the first receptacle and adapted to have fluid positioned between said receptacles by way of the opening to cast off vapor or steam to evenly I heat the walls of the, second receptacle, ather- 165 second receptacle within and to'evenly heat the a. v

mostatic disk pivotedto the outerreceptacle "i 

